GRANDE SERIES / BI-FOLD SYSTEMS

GLR-64Insulated Bi-Fold System

Designed to open wide architectural spans through controlled folding movement, GLR-64 combines a bottom-running carrier mechanism, high sash capacity and insulated profiles to create a robust and reliable transition.

  • 1 1/8″ × 3 3/8″ frame profile geometry
  • 3″ × 3″ sash profile geometry
  • Flexible multi-sash folding configurations
Technical SpecificationsDownload Brochure
GLR-64 Grande insulated bi-fold system application
Linea Rossa Grande Series
264 lbsMaximum Sash Load
Bottom-RunningCarrier Bearing System
EnhancedHeat and Sound Insulation

Flexible Living Across Wide Openings

Folding freedom, balanced movement and insulation performance in one system.

01

Wide Openings

The orderly stacking of multiple sashes allows a large portion of the architectural opening to remain accessible.

02

Durable Mechanical Structure

The bearing connected to the lower frame supports the sash weight evenly and contributes to stable system operation.

03

Flexible Stacking Options

Multiple stacking arrangements support different opening widths, circulation needs and architectural layouts.

04

Heat and Sound Insulation

The insulated profile structure helps preserve indoor comfort across expansive glazed surfaces.

GLR-64 Technical Details

GLR-64 insulated bi-fold system profile section

TECHNICAL SPECIFICATIONS

  • Frame Width1 1/8″
  • Frame Length3 3/8″
  • Sash Width3″
  • Sash Length3″
  • Maximum Sash Load264 lbs

The sash count, stacking direction and opening arrangement can be configured according to the project span and intended use.

Explore the folding mechanism
BALANCED AND CONTROLLED MOVEMENT

Bottom-Running Bi-Fold Mechanism

The system carries the sash weight through a bearing connected to the lower frame, transferring the load evenly to the floor. Integrated horizontal guide bearings limit unwanted rotation and preserve precise sash alignment and secure folding movement.

Balanced Load TransferBOTTOM-RUNNING CARRIER MECHANISM
Controlled Rotation StabilityHORIZONTAL GUIDE BEARINGS
GLR-64 folding sash connection detail
BOTTOM-RUNNING STRUCTURE

Lower Carrier Bearings

Carrying the sash weight through the bearing connected to the lower frame ensures balanced and reliable movement across wide sashes.
GLR-64 closed sash connection detail
ROTATION STABILITY

Horizontal Guide Bearings

The guides limit unwanted rotation of the upper bearings and maintain precise alignment throughout operation.
GLR-64 edge sash profile detail GLR-64 open sash connection detail GLR-64 folding movement profile detail GLR-64 closed sash connection detail

Let us define the right GLR-64 solution for your project.

Contact our specialist team for sash count, stacking direction, opening dimensions, glazing selection and application options.

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